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Article: Bona fide interaction-driven topological phase transition in correlated symmetry-protected topological states

TitleBona fide interaction-driven topological phase transition in correlated symmetry-protected topological states
Authors
Issue Date2016
PublisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prb/
Citation
Physical Review B: covering condensed matter and materials physics, 2016, v. 93 n. 11, article no. 115150 How to Cite?
Abstract© 2016 American Physical Society. It is expected that the interplay between nontrivial band topology and strong electron correlation will lead to very rich physics. Thus a controlled study of the competition between topology and correlation is of great interest. Here, employing large-scale quantum Monte Carlo simulations, we provide a concrete example of the Kane-Mele-Hubbard model on an AA-stacking bilayer honeycomb lattice with interlayer antiferromagnetic interaction. Our simulation identified several different phases: a quantum spin Hall insulator (QSH), an xy-plane antiferromagnetic Mott insulator, and an interlayer dimer-singlet insulator. Most importantly, a bona fide topological phase transition between the QSH and the dimer-singlet insulators, purely driven by the interlayer antiferromagnetic interaction, is found. At the transition, the spin and charge gap of the system close while the single-particle excitations remain gapped, which means that this transition has no mean-field analog and it can be viewed as a transition between bosonic symmetry-protected topological (SPT) states. At one special point, this transition is described by a (2+1)dO(4) nonlinear sigma model with exact SO(4) symmetry and a topological term at exactly Θ=π. The relevance of this work towards more general interacting SPT states is discussed.
Persistent Identifierhttp://hdl.handle.net/10722/268575
ISSN
2021 Impact Factor: 3.908
2020 SCImago Journal Rankings: 1.780
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHe, Yuan Yao-
dc.contributor.authorWu, Han Qing-
dc.contributor.authorYou, Yi Zhuang-
dc.contributor.authorXu, Cenke-
dc.contributor.authorMeng, Zi Yang-
dc.contributor.authorLu, Zhong Yi-
dc.date.accessioned2019-03-25T08:00:06Z-
dc.date.available2019-03-25T08:00:06Z-
dc.date.issued2016-
dc.identifier.citationPhysical Review B: covering condensed matter and materials physics, 2016, v. 93 n. 11, article no. 115150-
dc.identifier.issn2469-9950-
dc.identifier.urihttp://hdl.handle.net/10722/268575-
dc.description.abstract© 2016 American Physical Society. It is expected that the interplay between nontrivial band topology and strong electron correlation will lead to very rich physics. Thus a controlled study of the competition between topology and correlation is of great interest. Here, employing large-scale quantum Monte Carlo simulations, we provide a concrete example of the Kane-Mele-Hubbard model on an AA-stacking bilayer honeycomb lattice with interlayer antiferromagnetic interaction. Our simulation identified several different phases: a quantum spin Hall insulator (QSH), an xy-plane antiferromagnetic Mott insulator, and an interlayer dimer-singlet insulator. Most importantly, a bona fide topological phase transition between the QSH and the dimer-singlet insulators, purely driven by the interlayer antiferromagnetic interaction, is found. At the transition, the spin and charge gap of the system close while the single-particle excitations remain gapped, which means that this transition has no mean-field analog and it can be viewed as a transition between bosonic symmetry-protected topological (SPT) states. At one special point, this transition is described by a (2+1)dO(4) nonlinear sigma model with exact SO(4) symmetry and a topological term at exactly Θ=π. The relevance of this work towards more general interacting SPT states is discussed.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prb/-
dc.relation.ispartofPhysical Review B: covering condensed matter and materials physics-
dc.titleBona fide interaction-driven topological phase transition in correlated symmetry-protected topological states-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevB.93.115150-
dc.identifier.scopuseid_2-s2.0-84963516038-
dc.identifier.volume93-
dc.identifier.issue11-
dc.identifier.spagearticle no. 115150-
dc.identifier.epagearticle no. 115150-
dc.identifier.eissn2469-9969-
dc.identifier.isiWOS:000373104400003-
dc.identifier.issnl2469-9950-

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